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Modification of the Hottel-Whillier-Bliss equation for cover absorption effects in solar collectors

Journal Article:

Abstract

The effects of solar radiation absorption and the thermal resistance of a solar collector cover system on the various factors which occur in the Hottel-Whillier-Bliss (HWB) equation are considered. It is shown that by extending the thermal network analogy to systems with distributed heat sources, the heat transfer analysis of the collector can be done with little computational effort. The analysis also leads to a simple form of the HWB equation, with additional factors to account for the source distribution and the thermal resistance of the cover system, and it is applicable to conventional flat plate collectors and to other thermal trap collectors. A series of calculations for multilayer systems is presented to show the relative importance of the various factors in the modified HWB equation for different cover configurations.
Publication Date:
Jan 01, 1981
Product Type:
Journal Article
Reference Number:
EDB-82-070246
Resource Relation:
Journal Name: Reg. J. Energy, Heat Mass Transfer; (India); Journal Volume: 3
Subject:
14 SOLAR ENERGY; COVERINGS; ABSORPTIVITY; THERMAL CONDUCTIVITY; SOLAR COLLECTORS; ABSORPTION; HEAT TRANSFER; NETWORK ANALYSIS; SOLAR RADIATION; TEMPERATURE DISTRIBUTION; THERMAL INSULATION; ENERGY TRANSFER; EQUIPMENT; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; RADIATIONS; SOLAR EQUIPMENT; STELLAR RADIATION; THERMODYNAMIC PROPERTIES; 141000* - Solar Collectors & Concentrators
OSTI ID:
5626222
Research Organizations:
Univ. of Singapore, Singapore
Country of Origin:
India
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: RJETD
Submitting Site:
IAA
Size:
Pages: 1-10
Announcement Date:

Journal Article:

Citation Formats

Wijeysundera, N E. Modification of the Hottel-Whillier-Bliss equation for cover absorption effects in solar collectors. India: N. p., 1981. Web.
Wijeysundera, N E. Modification of the Hottel-Whillier-Bliss equation for cover absorption effects in solar collectors. India.
Wijeysundera, N E. 1981. "Modification of the Hottel-Whillier-Bliss equation for cover absorption effects in solar collectors." India.
@misc{etde_5626222,
title = {Modification of the Hottel-Whillier-Bliss equation for cover absorption effects in solar collectors}
author = {Wijeysundera, N E}
abstractNote = {The effects of solar radiation absorption and the thermal resistance of a solar collector cover system on the various factors which occur in the Hottel-Whillier-Bliss (HWB) equation are considered. It is shown that by extending the thermal network analogy to systems with distributed heat sources, the heat transfer analysis of the collector can be done with little computational effort. The analysis also leads to a simple form of the HWB equation, with additional factors to account for the source distribution and the thermal resistance of the cover system, and it is applicable to conventional flat plate collectors and to other thermal trap collectors. A series of calculations for multilayer systems is presented to show the relative importance of the various factors in the modified HWB equation for different cover configurations.}
journal = {Reg. J. Energy, Heat Mass Transfer; (India)}
volume = {3}
journal type = {AC}
place = {India}
year = {1981}
month = {Jan}
}